Carbureter for explosive-engines.



PATENTED 00T. 13, `1903.

lE. F. CLARK. CARBURETER EUR -EXPLOSIVE ENGINES.

APPLICATION FILED 00T. 9, 1902.

No uohrsr..

wf WW No. l741,224.

UNITED Sterns Patented october 13, i903.

ferent rricn..

EDWIN F. CLARK, OF CLEVELAND, OHIO.

SPECIFICATION forming part of Letters Patent N o. 741,224, dated October13, 1903.

Application filed October 9. 1902. Serial No. 126,581. (No model.)

To all whom t may concern.-

. Be it known that I, EDWIN F. CLARK, a citizen of the United States,residing at Oleveland, in the county of Cuyahoga and State of Ohio, haveinvented new and useful Improvements in Carbureters forExplosive-Engines, of which the following is a specification.

The invention relates to improvements in carbureters or vaporizers usedupon gasolene or hydrocarbon engines to effect the mixture of the airand gasolene-vapor introduced into the engine-cylinder upon the feedingstroke of the piston.

The object of the invention is to provide a device of this characterwhich lis simple in construction, durable in use, and very efficient inoperation, a further object being' to provide means whereby the amountofgasolene admitted upon each stroke of the piston may be quickly variedor cut off entirely without affecting the inlet of air.

With these and other objects in View, whic will appear as the nature ofthe invention is better understood, said invention consists in certainnovel features of construction, combination, and arrangement of partswhich will hereinafter be fully described and claimed, and illustratedin the accompanying drawings, in which Figure 1 is a vertical sectionalview through the improved carbureter. Fig. 2 is a horizontal section onthe line 2 2 of Fig. 1.

Referring more particularly to the drawings, the numeral 1 designatesthe casing which forms the walls of the mixing-chamber 2, in which theair-inlet and the outlet for the mixed gases are formed and in which theregulating-valves are located. The inlet 3 for the air may bescrew-threaded for connection with a pipe leading from the usual sourceof hot-air supply or may be opened to the atmosphere at any point, andthe outlet 4 for the mingled air and gasolene-vapor is alsoscrew-threaded for connection with a pipe leading to the cylinder of theengine. The top of said casing is closed by the cover 5, in which thegasolene-inlet 6, screw-threaded for connection with a pipe leading fromthe source of gasolene-supply and the gasolene-passage 7 are formed. Theamount of gasolene passing through said passage may be regulated or cutoff entirely by the needle-valve 8.

Within the casing 1 is a concentric partition or wall 9, inclosing avalve-chamber 10. The

gasolene-valve 11 is in the form of a piston 12, 5 5

slidably mounted in the chamber 10, the said piston being provided witha point or needle 13, which is adapted to close the lower end of thepassage 7 and to act as a spreader for the gasolene. the stein 14, whichslides in the guide socket or boss 15, formed in the bottom of thecasing 1, and a coil-spring 16, surrounding said boss and stem, has oneof its ends bearing upon the under side ofthe piston and its other endbearing upon the bottom of the casing to force said piston and needleupwardly to close the gasolene-passage 7.

In the wall or partition 9, on a line with the air-inlet 3, are formedthe ports or passages 17, which afford communication between the upperportion of the mixing-chamber 2 and the gasolene valve-chamber 10.Similar ports or passages 1S afford communication between said chambersbelow the piston-valve 11. The ports or passages 18 are adapted to beclosed or partly closed by a valve 19 inthe form of a sleeve or collarslidably mounted upon the wall or partition 9. The valve is adjusted Thepiston or head 12 is guided by 6o by means of the operating-rod 20,secured to 8o the sleeve by a screw, and projects through the bottom ofthe casing 1 upon the outside. A coil-spring 21 surrounds said rodbetween the sleeve and the bottom of the casing and exerts its energy tohold said valve raised to keep the ports 18 open. Stops 22 upon theoutside of the sleeve 19 are adapted to contact with similar stops 23,formed upon the inside of the walls of the casing in order to limit theupward movement of said valve.

The valve 19 may be held in adjusted position by means of a set-screw25, arranged to be moved into and out of engagement with rod 20.

In the operation of the device when the feeding stroke of theengine-piston takes place the suction on the bottom of valve 12 causedby the forward movement of the engine-piston will draw down the valve 12and open valve-point 13, thus admitting gasolene through passage 7, andthe air and gasolene-vapor will flow through the mixing-chamber andthence to the cylinder of the engine. The instant the suction is removedfrom the bottom of the IOO valve 1'1 on the return stroke of the pistonof the engine the tension of the spring 16 will return the said valve toits normal position and close the gasolene-passage '7. By means of therod 2O the valve 19 may be operated to regulate the size of the ports orpassages 18, and hence to regulate the amount of suction upon the bottomof the piston 12 of the valve 11 and the degree of the opening of thepassage 7 by the point or needle 18. It will thus be seen that theamount of gasolene admitted at each stroke of the piston may be easilyvaried without interfering with the inlet of the air.

From the foregoing description, taken in connection with theaccompanying drawings, the construction, mode of operation, andadvantages of my invention will, it is thought, be readily apparent.

Various changes in the form, proportion, and minor details ofconstruction may be made without departing from the principle orsacrificing any of the advantages of the invention.

Having thus particularly described my invention, what I claim, anddesire to secure by Letters Patent, is-

1. A carbureter or vaporizer, comprising a casing inclosing amixing-chamber, an inner wall or partition within said casing, inclosinga valve-chamber, said chambers being in communication through ports orpassages formed in said inner wall, an air-inlet to said mixingchamber,an outlet for said mixing-chamber, a gasolene-inlet to saidvalve-chamber, a sliding piston in said valve-chamber, carrying avalve-needle adapted to close the gasoleneinlet, a sliding sleevemounted upon said inner wall and adapted to cut oii the communicationbetween the mixing-chamber and the valve-chamber, below said slidingpiston, and 4o means for operatin g said sleeve, substantially as setforth.

2. A carbureter or vaporizer, comprising a casing inclosing amixing-chamber, an inner concentric wall orpartition within said casing, 4 5

inclosing a valvechamber, said chambers being in communication throughports or passages formed in said inner wall at its upper and lower ends,an air-inlet to said mixingchamber, an outlet to said mixing-chamber, 5o

a cover for said mixingchamber, having a gasolene-inlet formed therein,a valve in said cover for regulating the flow of gasolene through saidinlet, a sliding spring-actuated piston in said valve-chamber, providedwith 55 a valve-needle upon its upper end adapted to close the lower endof the gasolene-inlet in said cover, and provided with a guide-stem uponits lower end adapted to slide in a guide vsocket or boss, a sleeveslidably mounted upon 6o said inner wall and adapted to close the lowerports or passages in said wall to cut oft the communication between themixing-chamber and the valve-chamber below said piston and anoperating-rod carried by said sleeve and 65 extending through thecasing, substantially as set forth.

' In testimony whereof I have hereunto set my hand in the presence oftwo subscribing

